Light-emitting device

Patent metadata

Field	Value
Publication number	US-2018269366-A1
Application number	US-201815924079-A
Country	US
Kind code	A1
Filing date	Mar 16, 2018
Priority date	Mar 17, 2017
Publication date	Sep 20, 2018
Grant date	—

Abstract

A light-emitting device includes: a resin package including: a lead part including a first lead and a second lead, each including a main body portion and a raised portion connected to the main body portion, wherein an upper surface of each of the first lead and the second lead includes a first primary surface portion in the main body portion and a curved portion in the raised portion in a cross-sectional view taken in a direction perpendicular to an upper surface of the lead part, and wherein the curved portion is continuous with and curved upward from an end portion of the first primary surface portion, a resin portion, and a recess defined by a portion of the upper surface of the lead part and the resin portion; and a light-emitting element mounted in the resin package. The curved portion is buried in the resin portion.

First claim

What is claimed is:

1 . A light-emitting device comprising:
a resin package comprising:
a lead part comprising a first lead and a second lead, each of the first lead and the second lead including a main body portion and at least one raised portion connected to the main body portion, wherein an upper surface of each of the first lead and the second lead includes a first primary surface portion in the main body portion and a curved portion in the at least one raised portion in a cross-sectional view taken in a direction perpendicular to an upper surface of the lead part, and wherein the curved portion is continuous with and curved upward from an end portion of the first primary surface portion,
a resin portion, and
a recess defined by a portion of the upper surface of the lead part and the resin portion; and
a light-emitting element mounted in the resin package, wherein a part of the first primary surface portion is located at a bottom of the recess, wherein the light-emitting element is located on the first primary surface portion in the recess, and wherein the curved portion is buried in the resin portion.

2 . The light-emitting device according to claim 1 , wherein the first lead and the second lead are both exposed from the resin portion at a bottom surface of the resin package.

3 . The light-emitting device according to claim 1 , wherein:
the resin package has a plurality of outer lateral surfaces including a first outer lateral surface, a second outer lateral surface opposite to the first outer lateral surface, a third outer lateral surface, and a fourth outer lateral surface opposite to the third outer lateral surface, and at the plurality of outer lateral surfaces, the raised portion is exposed from the resin portion, and the raised portion and the resin portion are substantially in the same plane.

4 . The light-emitting device according to claim 3 , wherein, at the plurality of outer lateral surfaces, a height of the raised portion at the first outer lateral surface is different from a height of the raised portion at the third outer lateral surface.

5 . The light-emitting device according to claim 3 , wherein, at the plurality of outer lateral surfaces, a width of the raised portion at the first outer lateral surface in a direction along the first outer lateral surface is different from a width of the raised portion at the third outer lateral surface in a direction along the third outer lateral surface.

6 . The light-emitting device according to claim 1 , wherein:
the lead part comprises a metal layer at each of an upper surface and a lower surface of the lead part, and a thickness of the metal layer at the lower surface is smaller than a thickness of the metal layer at the upper surface.

Assignees

• Nichia Corp

Inventors

• Oku Hironao
• Hashimoto Toshiyuki
• Isono Mitsuhiro
• Ishihara Takao
• Kato Takaaki

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W42/60

  protecting against electrostatic charges or discharges, e.g. Faraday shields (integrated devices comprising arrangements for electrical protection H10D89/60) · CPC title

• H01L33/645

  Electricity · mapped topic

• H01L33/60 Primary

  Electricity · mapped topic

• H01L2933/0033

  Electricity · mapped topic